These pieces are to allow the build and experimentation of a bridge with truss system to demonstrate diffrent forces on different shapes of bridges. I wanted to bring this to life as a visual aid always made the concept much easier to learn, and if I could put it together myself it stuck. This bridge builder can demonstrate how different types and sizes of bridges will act differently, and is a good visual aid to learning about the forces acting on each member.
Comparable to kit on Amazon for $32. This takes $3-4 in PLA filament.